Yii2.0 - 新增数据

# 新增
//方法一：
$model_order = new PurchaseOrder();
$model_order->load($res); //规则验证
$model_order->operation_type  ='2';
$model_order->created_at      = date('Y-m-d H:i:s');

if(false==$model_order->save())
{
    $errors=$model_order->getFirstErrors(); //获取错误
    foreach ($errors as $error)
    {
        $str.=$error."</br>";
    }
    $transactions->rollBack(); //事务：返回
}

//方法二：
public function actionCreate()
{
    $model = new GroupAuditConfig();
    $model->cdate=time();
    $model->uid=Yii::$app->user->id;

    if ($model->load(Yii::$app->request->post()) && $model->save()) {
        return $this->redirect(['index']);
    } else {
        return $this->render('create', [
            'model' => $model,
        ]);
    }
}
public function actionDelete($id)
{
    $this->findModel($id)->delete();
}
    -------------------------- Yii::$app->request->post() ---------------------------------
    Array
    (
        [_csrf] => aFQ0XzFJWUoAYV4.WDo9BFgwTmxkHyMPCSd7LXx4FTMEIn5rRy80JA==
        [GroupAuditConfig] => Array
            (
                [group] => 1
                [values] => 1000
                [remark] => 12345678
            )

    )
    --------------------------------------------------------------------
    
//方法三：批量保存
$statu = Yii::$app->db->createCommand()->batchInsert(PurchaseTemporary::tableName(),['sku','purchase_quantity', 'purchase_price','title','create_id','product_id'], $Name)->execute();
Yii::$app->db->createCommand()->batchInsert('pur_platform_sales_statistics',['platform','sku','warehouse_name','statistics_date','days_sales_1'],$formartval)->execute();
    
    
    
//方法四：
$model = $this->findModel($id);

if ($model->load(Yii::$app->request->post())) {
    $model->level_audit_status=0;
    $model->audit_note='';
    $model->save();
    return $this->redirect(['sales-index']);
}
protected function findModel($id)
{
    if (($model = PlatformSummary::findOne($id)) !== null) {
        return $model;
    } else {
        throw new NotFoundHttpException('The requested page does not exist.');
    }
}